1. BCNatal - Barcelona Center for Maternal-Fetal and Neonatal Medicine (Hospital Sant Joan de Déu and Hospital Clínic); University of Barcelona; Barcelona Spain
2. RETICS funded by the PN I + D + I 2008-2011 (Spain), ISCIII- Sub-Directorate General for Research Assessment and Promotion and the European Regional Development Fund (ERDF), Ref. RD12/0026.; Spain